there are subtle differences between US and other regions, usually Wifi channels, sometimes GPS and Bluetooth differences.

I'm not really try out a US ROM and beta test it. I would rather have a known quantity (namely a 3.1 stock rom, rooted and the updater removed/disabled -thats all). Once you have that, I can tinker with other bits myself and I am in complete control of the changes and not reliant on what others want (DEODEX, APPS2SD, Boot Logos etc)

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